Frank is a fish who is the owner of Palace of Pranks, a shop where SpongeBob is the best customer and assumed apprentice of the expert prankster.
Frank wears an eyepatch and is green in color. He has a major appearance in "Pranks a Lot," and a minor appearence in "You Don't Know Sponge" as a checkout clerk at a magic shop. According to SpongeBob, Frank is a master at pranks, and makes a living helping aspiring pranksters like SpongeBob and Patrick to get started on playing gags on others. At his shop, his products include:

Fake Seanut Brittle (Snakes in a can)

Hand Buzzer

Fake Dollar

Whoopie Cushion

Invisible Spray

Fake and REAL Vomit

Exploding Chewing Gum

Frank is a green color. He wears a blue shirt and has brown pants. He has short gray hair, has an eyepatch on his left eye and got gray hair. His name rhymes with prank.